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      08-14-2013, 09:35 AM   #3
MysticBlue
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Drives: '20 M5C, '09 M3 DCT Coupe
Join Date: Apr 2008
Location: Eastern Oregon... They call 'em rigs here

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Shouldn't be any difference in snow traction between 18" and 19" all weather tires... they both suck. I know this wasn't specifically what you asked, so feel free to ignore my rant, I just bring it up for anyone who is concerned about winter traction. Last year I went from all weathers to snow and ice rated on my Dakota. Huge difference in the snow and ice. I could put it in 2wd in situations where I used to put it in 4wd and could hardly tell I wasn't in 4wd. When I get the X5, I plan on getting 20" with performance tires, and a separate set of 19" with snow and ice tires. I know not everyone wants to spend the extra money on wheels, but it makes it quick and easy to change over for winter driving, and I don't plan on ever driving on all weather tires again. A tire that tries to do everything doesn't do anything well.
But to answer your question, I don't think there will be much difference between 18 and 19 inchers. Get what you want.
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M5C 20% tint, Xpel full front, partial sides and rear. Spacers, 15mm front, 12mm rear. Turner Motorsport Oil Cooler Guard.
M3: Active Autowerke filter, Dinan underdrive pulley, Dinan full exhaust and software, 3.45 Differential, Springs, Brakes, Dinan/HRE wheels, 275/30-19 w/10mm spacer, 295/30-19 w/3mm spacer, painted front reflectors, 30% tint, Escort 8500i & Lidar Jammer, LUX H8 V5 halos, Euro rear foglights, 3M ClearBra.
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